Provenance meta-data, also known as data pedigree, is a set of data that explains how information was derived. A number of provenance systems exist. They are useful for finding the sources of errors; allowing system users to have confidence in the materials; and potentially providing legal justification for decisions. An open issue has been how to properly secure this meta-data, in a manner that extends beyond trusting the information providers. Blockchain technology provides a universally accessible ledger of transactions that is the basis of the current generation of crypto-currencies. The blockchain structure provides guarantees of system integrity that make it exceedingly difficult for malicious insiders to tamper with data. Our project adapts blockchain concepts to securing provenance meta-data.